Monday, March 23, 2015

NTT Electronics Delivers 20nm Low-Power Coherent DSP

NTT Electronics (NEL) announced the commercial release of its second generation, 20nm low-power coherent DSP for use in high-port-density 100G metro transport systems. The device was developed by NEL in collaboration with Broadcom.

The new NLD0640 Gen2 LP-DSP features integrated 100GE transponder capability, full coverage of operation modes such as the lowest power 80-km ZR mode and power-managed metro mode for distances up to 1200km, and digital equalizer compensating electrical signal distortion to-and-from 100G pluggable Analog Coherent Optics (ACO).  The LP-DSP uses Broadcom's signal-processing-enhanced mixed-signal technologies to intensify the coherent processing core, which has already been widely deployed as NEL's first generation 40nm DSP product NLD0629 Gen1 DSP3.

“I am glad to see that our initiative, to make merchant Silicon DSP solution available for every manufacturer, has evolved into this new generation.” said Masahito Tomizawa, Executive Manager of NTT Network Innovation Laboratories. “Digital coherent is an optical communications innovation, not only for enabling 100 Gbps per wavelength, but also for enabling interoperability among multi-source pluggable coherent optics using lower-cost technologies such as compound semiconductor and silicon photonics. One of my laboratories has already confirmed successful interoperability of the new NLD0640 Gen2 LP-DSP not only with multi-source CFP2-ACO’s but also with other CFP-DCO employing its in-house DSP ASIC.”


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